The rate of signups for the Affordable Care Act, aka Obamacare, continues to increase, with more than 4 million people signing up so far. Yesterday alone, Obamacare boasted its biggest day with more than 600,000 people registering for insurance.

With President-elect Trump describing the legislation as a “disaster,” many proponents of the bill say it’s “remarkable” that open enrollment was such a success.

The deadline for open enrollment has now been extended until December 19.